I recommend that you install some sort of bumper
around the robot. In my case, I purchased some 3/4” pipe

PARTS LIST

The following are the components needed to build this
portion of the project.

On the Megabot, you will need:

• 24, #6 hex nuts

• 24, #6 washers

• 1, 6” section of 3/4” pipe insulation

• 1, 2’ x 2’ x 1/2” birch plywood

• 2, 4” x 14” x 3/4” pine

• 6, 3/4” black phosphate screws

On the Firebot, you will need:

• 8, #6 hex nuts

• 8, #6 washers

• 4, #10 3/4” machine screws

• 4, #10 hex nuts

• 8, #10 washers

• 1, large caster (see text)

• 1, 12” x 12” x 1/8” hardboard

FIGURE 22

52 SERVO 12.2008

FIGURE 21

insulation. Simply cut it to size and wrap it around the base
as shown in Figure 19. Attach the two ends with hot glue.
I found that you can also use exterior based glue, like the
kind used on gutters. Next, mark a line down the center of
the base, also shown in Figure 19.

Step 6

Now mark two lines 4” from the center as shown
in Figure 20. These lines will be used when you mount